Just announced by Tim Millwood:
I'm pleased to announce that Drupalcon 2011 will be in London 21st - 26th August.
We have secured the Fairfield Halls, 15 minutes from the centre of London, with access 24 hours a day for the entire week. We can hold sessions by day and code sprints by night. There are many great hotels available right across London for varying budgets.
We are aiming to make this the best European DrupalCon ever, but for that we need your help. Over the last few months we have brought together a small team within the UK Drupal community who have helped choose the location, organise the venue and build the web site.
We are now in a position to bring more volunteers on board. We have an Open Atrium site at http://drupalcon.org.uk/user/register to gather your interests, skills and ideas. Please sign up, and let us know how you can help.